Why is synchronized control important for pulsed and dynamic testing of semiconductor devices?

Synchronized control is essential when characterizing devices that exhibit time-dependent behavior, fast switching characteristics, or are sensitive to self-heating. Many semiconductor phenomena, such as charge trapping, transient leakage, or dynamic on-resistance, manifest on microsecond to nanosecond timescales. Without tight timing alignment between sourcing and measurement units, these effects may be misrepresented or completely missed. USPA solves this by providing a deterministic timing engine that simultaneously triggers all measurement channels and stimulus waveforms with sub-10 ns resolution. This ensures accurate correlation between applied signals and observed device response. For example, in characterizing a GaN HEMT, the gate and drain pulses must be precisely aligned to measure rise time, overshoot, and reverse recovery. USPA platforms also reduce software latency and jitter, yielding repeatable and trustworthy results even under complex test scenarios.

How does a prototyping platform facilitate multi-instrument integration and scalability in test systems?

Prototyping platforms are designed for flexibility and expandability, allowing engineers to configure systems based on specific test needs. Modules such as SMUs, waveform generators (WGFMUs), capacitance measurement units (CMUs), and switch controllers can be added or removed depending on the application. Prototyping platform acts as the synchronization backbone, coordinating control, triggers, and timing between instruments through a central bus and command set. This approach enables: Scalable test environments, from single-device bench setups to large, automated wafer-level probing stations. Cross-domain measurement capability, such as combining IV, CV, and pulse measurements in a single test flow. Upgradable system designs, where future test requirements can be met by adding modules or increasing channel count without overhauling the existing setup. This modularity is particularly valuable in evolving research or production workflows, supporting everything from transistor modeling to power device validation and material characterization.

What types of applications benefit most from signal processing architecture-based test platforms?

Signal processing architecture-based systems excel in applications that require precise, high-speed, or multi-domain measurement coordination. Key application areas include: Pulsed IV/CV testing: Essential for characterizing devices like GaN FETs, SiC MOSFETs, or CMOS transistors under non-steady-state conditions. Transient response characterization: Analysis of switching behavior, diode recovery, and charge injection during fast signal transitions. Bias temperature instability (BTI) and time-dependent dielectric breakdown (TDDB): Long-duration tests that apply voltage stress with intermittent pulsed readouts to monitor degradation. Material and device physics studies: Investigating time-resolved carrier transport, capacitance transients, and frequency-dependent behavior in emerging materials. Reliability and stress testing: Performing automated sequences with tightly controlled voltage, current, and pulse widths to simulate operating environments. The deterministic nature of them makes it ideal for capturing subtle behaviors that would otherwise be masked by measurement jitter or asynchronous test control.

Universal Signal Processing Architecture

Modular prototyping platform for high-speed semiconductors

Keysight Universal Signal Processing Architecture (USPA) offers a high-performance, modular, fully programmable real-time environment for ultrafast application-specific prototyping and validation. Built around industry-leading ADC3 and DAC3 data converters and FPGA-based digital signal processing, the USPA platform empowers engineers to rapidly iterate and verify designs—reducing risk, development time, and cost. It supports applications spanning SoC/ASIC prototyping, 6G, optical communications, radar, and advanced physics research. Request a quote for one of our popular configurations today. Need help selecting? Check out the resources below.